上游切角对串列双方柱气动性能影响研究

郑德乾,祝瑜哲,刘帅永,马文勇,方平治

振动与冲击 ›› 2021, Vol. 40 ›› Issue (15) : 216-223.

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (15) : 216-223.
论文

上游切角对串列双方柱气动性能影响研究

  • 郑德乾1,祝瑜哲1,刘帅永2,马文勇3,方平治4
作者信息 +

Effects of upstream corner cut on aerodynamic performance of two tandem square cylinders

  • ZHENG Deqian1, ZHU Yuzhe1, LIU Shuaiyong2, MA Wenyong3, FANG Pingzhi4
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文章历史 +

摘要

串列双方柱气动干扰效应与方柱本身的绕流特征有很大的关系,方柱角部局部外形变化将对串列双方柱的气动干扰效应产生明显的影响,相关的研究仍较少。采用基于雷诺平均SST k-ω湍流模型的二维非定常绕流数值模拟方法,研究了上游方柱无、有切角(切角率10%)对串列双方柱气动性能的影响,通过间距比为2.0时无切角工况的数值模拟结果与文献试验结果的对比,验证了模拟方法及参数设置的有效性;根据升、阻力系数的对比分析,确定了上游无、有切角时串列双方柱的气动力突变临界间距比分别为4.6和4.1;对两临界间距比情况的无、有切角串列双方柱,分别进行了基于空间平均的三维非定常绕流大涡模拟,从风压分布角度详细分析了上游方柱切角处理对串列双方柱气动性能的影响,从方柱周围的时均和瞬态流场角度进行了机理分析。上游方柱切角后,在剪切层发生分离再附,尾流变窄,旋涡脱落更趋复杂,引起流场流态的变化,风压分布受到影响,方柱升、阻力系数降低,临界间距缩短。

Abstract

There is a close relationship between aerodynamic interference effect of two tandem square cylinders and characteristics of flow around square cylinder. The local shape change of corner of square cylinder can significantly affect aerodynamic interference effect of two square columns in series. Until now, the related studies are very few. Here, the 2-D unsteady  numerical simulation method based on Reynolds average SST k-ω turbulence model was adopted to study effects of no corner cut and corner cut (10%) on aerodynamic performance of the two tandem square cylinders. Comparing the numerical simulation results under conditions of no corner cut and the spacing ratio of 2.0 with test results in literature verified the effectiveness of the simulation method and parameter setting. Then, according to the contrastive analysis of lift and drag coefficients, critical spacing ratios of the two square columns in series without and with corner cut in upstream were determined to be 4.6 and 4.1, respectively. Finally, the 3-D unsteady flow around the two cylinders without and with corner cut was simulated using the spatially averaged large eddy simulation
to analyze effects of upstream corner cutting on aerodynamic performance of the two cylinder in detail from the angle of wind pressure distribution. The mechanism analysis was performed in the aspect of time averaged  and transient flow fields around the two cylinders. It was shown that after corner cutting of the upstream square cylinder, the flow separates and reattaches in, wake flow becomes narrow, and vortex shedding becomes more complex to cause flow field’s  state varying, wind pressure distribution being affected, square cylinder’s lift and drag coefficients dropping, and critical spacing being shortened.

关键词

串列双方柱 / 切角处理 / 数值模拟 / 临界间距 / 气动性能 / 流场机理

Key words

two tandem square cylinders / corner cutting / numerical simulation / critical spacing / aerodynamic performance / flow field mechanism

引用本文

导出引用
郑德乾,祝瑜哲,刘帅永,马文勇,方平治. 上游切角对串列双方柱气动性能影响研究[J]. 振动与冲击, 2021, 40(15): 216-223
ZHENG Deqian, ZHU Yuzhe, LIU Shuaiyong, MA Wenyong, FANG Pingzhi4. Effects of upstream corner cut on aerodynamic performance of two tandem square cylinders[J]. Journal of Vibration and Shock, 2021, 40(15): 216-223

参考文献

[1]沈国辉,王宁博,楼文娟,等.渡桥电厂冷却塔倒塌的塔型因素分析[J].工程力学,2012,29(8):123-128.
SHEN Guohui, WANG Ningbo, LOU Wenjuan,et al. Analysis of tower shape factor in the collapse of the ferrybridge cooling towers[J]. Engineering Mechanics, 2012, 29(8):123-128.
[2]樊晓羽,秦浩,商敬淼,等.串列双方柱干扰效应流动机理研究[J].振动与冲击,2020,39(8):230-238.
FAN Xiaoyu, QIN Hao, SHANG Jingmiao, et al. Flow mechanism investigation on interference effect of two square cylinders in tandem arrangement [J]. Journal of Vibration and Shock, 2020, 39(8):230-238.
[3]及春宁, 陈威霖, 黄继露,等. 串列双圆柱流致振动的数值模拟及其耦合机制[J].力学学报,2014,46(6):862-870.
JI Chunning, CHEN Weilin, HUANG Jilu, et al. Numerical investigation on flow-induced vibration of two cylinders in tandem arrangements and its coupling mechanisms [J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(6):862-870.
[4]PAPAIOANNOU G V, YUE D K P, TRIANTAFYLLOU M S, et al. On the effect of spacing on the vortex-induced vibrations of two tandem cylinders [J]. Journal of Fluids & Structures, 2008, 24(6):833-854.
[5]XU G, ZHOU Y. Strouhal numbers in the wake of two inline cylinders [J]. Experiments in Fluids, 2004, 37(2):248-256.
[6]ZDRAVKOVICH M M. Review of flow interference between two circular cylinders in various arrangements [J]. Journal of Fluids Engineering, 1977, 99(4):618-633.
[7]LJUNGKRONA L, NORBERG C H, SUNDEN B. Free-stream turbulence and tube spacing effects on surface pressure fluctuations for two tubes in an in-line arrangement [J]. Journal of Fluids and Structures, 1991, 5(6):701-727.
[8]SAKAMOTO H, HAINU H, OBATA Y. Fluctuating forces acting on two square prisms in a tandem arrangement [J]. Journal of Wind Engineering and Industrial Aerodynamics, 1987, 26(1):85-103.
[9]LIU C H, CHEN J M. Observations of hysteresis in flow around two square cylinders in a tandem arrangement [J]. Journal of Wind Engineering and Industrial Aerodynamic 2002, 90(9):1019-1050.
[10]韩宁,顾明.两串列方柱局部脉动风压干扰研究:第一部分 迎风面效应[J].振动与冲击,2009,28(12):188-192.
HAN Ning, GU Ming. Interference effects on local fluctuating pressure of two square tall buildings in tandem arrangement: Part 1 windward side effects [J]. Journal of Vibration and Shock, 2009, 28(12):188-192.
[11]INOUE O, MORI M, HATAKEYAMA N. Aeolian tones radiated from flow past two square cylinders in tandem [J]. Physics of Fluids, 2006, 18(4):379.
[12]陈素琴,黄自萍,沈剑华,等.两串列方柱绕流的干扰数值研究[J].同济大学学报(自然科学版),2001, 29(3):320-325. 
CHEN Suqin, HUANG Ziping, SHEN Jianhua, et al. Numerical computation of the flow around two square cylinders in tandem arrangement [J]. Journal of Tongji University (Natural Science),2001,29(3):320-325.
[13]SOHANKAR A. A numerical investigation of the flow over a pair of identical square cylinders in a tandem arrangement [J]. International Journal for Numerical Methods in Fluids, 2012, 70(10):1244-1257.
[14]李聪洲,张新曙,胡晓峰,等.高雷诺数下多柱绕流特性研究[J].力学学报,2018,50(2):233-243.
LI Congzhou, ZHANG Xinshu, HU Xiaofeng, et al. The study of flow past multiple cylinders at high Reynolds numbers [J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(2):233-243.
[15]项海帆.结构风工程的现状和展望[J].振动工程学报, 1997, 10(3):258-263.
XIANG Haifan. State of the art and prospect in studies on structural wind engineering [J]. Journal of Vibration Engineering, 1997, 10(3):258-263.
[16]王新荣,顾明.角部处理的二维方柱风压分布特性的试验研究[J].土木工程学报, 2016(7):79-88.
WANG Xinrong, GU Ming. Experimental study on wind pressure distributions of 2D square prisms with various corner treatments [J]. China Civil Engineering Journal, 2016(7):79-88.
[17]张正维,全涌,顾明,等.斜切角与圆角对方形截面高层建筑气动力系数的影响研究[J].土木工程学报,2013, 46(9):12-20.
ZHANG Zhengwei, QUAN Yong, GU Ming, et al. Effects of corner chamfering and rounding modification on aerodynamic coefficients of square tall buildings [J]. China Civil Engineering Journal, 2013, 46(9):12-20.
[18]HAYASHIDA H, IWASSA Y. Aerodynamic shape effects of tall building for vortex induced vibration [J]. Journal of Wind Engineering and Industrial Aerodynamics, 1990, 33(1):237-242.
[19]WANG Xinrong, GU Ming. Experimental study on Re number effects on aerodynamic characteristics of 2D square prisms with corner modifications [J]. Journal of Wind and Structures, 2016, 22(5):573-594.
[20]GU M, QUAN Y. Across-wind loads of typical tall buildings [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2004, 92(13):1147-1165.
[21]郑德乾,刘帅永,马文勇,等.倒角切角对方柱气动性能影响的大涡模拟研究[J].振动与冲击,2021,40(1):8-14.
ZHENG Deqian, LIU Shuaiyong, MA Wenyong, et al. Large eddy simulation for effects of chamfering and corner cut on aerodynamic performance of square cylinder[J]. Journal of Vibration and Shock, 2021, 40(1): 8-14.
[22]SHANG J, ZHOU Q, ALAM M M, et al. Numerical studies of the flow structure and aerodynamic forces on two tandem square cylinders with different chamfered-corner ratios [J]. Physics of Fluids, 2019, 31(075102): 1-15.
[23]ALAM M, MORIYA M,  TAKAI K, et al. Suppression of fluid forces acting on two square prisms in a tandem arrangement by passive control of flow[J]. Journal of Fluids and Structures, 2002, 16(8):1073-1092.
[24]SAKAMOTO H, HAINU H, OBATA Y. Fluctuating forces acting on two square prisms in a tandem arrangement[J]. Journal of Wind Engineering and Industrial Aerodynamics, 1987, 26(1):85-103.
[25]杨群,赵会涛,刘小兵,等.串列双方柱绕流的脉动压力分布与气动力研究[J].建筑结构, 2020,50(1):140-144.
YANG Qun, ZHAO Huitao, LIU Xiaobing, et al. Study on fluctuating pressure distribution and aerodynamic force of flows around two square cylinders in tandem arrangement [J]. Building Structure, 2020,50(1):140-144.
[26]刘小兵,陈帅,赵会涛.串列双方柱绕流的时均压力分布特性研究[J].建筑结构,2020,50(1):135-139.
LIU Xiaobing, CHEN Shuai, ZHAO Huitao. Study on time average pressure distribution features of flow around two square cylinders in tandem arrangement [J]. Building Structure, 2020, 50(1):135-139.
[27]吕启兵,杨斌,杨忠超,等.串列双方柱绕流的数值模拟[J].重庆交通大学学报(自然科学版)2013,32(5):1010-1013.
L Qibing, YANG Bin, YANG Zhongchao, et al. Numerical simulation of flow around two square cylinders in tandem arrangement [J]. Journal of Chongqing Jiaotong University(Natural Science), 2013,32(5):1010-1013.
[28]谢壮宁,顾明.任意排列双柱体的风致干扰效应[J].土木工程学报,2005,38(10):32-38.
XIE Zhuangning, GU Ming. Wind-induced interference effects between two arbitrarily arranged prisms [J].  China Civil Engineering Journal, 2005,38(10):32-38.
[29]马建,郭明旻,徐有恒.同轴双方柱气动力载荷的相互干扰[J].力学季刊,2000,21(3):365-370.
MA Jian, GUO Mingmin, XU Youheng. Interference effects on wind loads of two prismatic cylinders arranged in a line [J]. Chinese Quarterly of Mechanis, 2000, 21(3):365-370.
[30]周强,廖海黎,曹曙阳.高雷诺数下方柱绕流特性的数值模拟[J].西南交通大学学报, 2018, 53(3):533-539.
ZHOU Qiang, LIAO Haili, CAO Shuyang. Numerical study of flow characteristics around square cylinder at high Reynolds number [J]. Journal of Southwest Jiaotong University, 2018, 53(3):533-539.

 

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